Hello,
I did a complete manual installation using the New Release method on my Win10 pro laptop of the following:
-Python 2.7.13.1Zero, 32 bits
-CW1173 V 3.5.4
I can open but not running the CWCapture or the CWAnalyzer and I get this message: AttributeError: ‘function USB_find_busses’ not found.
Could not find updated installation documentation for version 3.5.4
Is there anyone out there with a fix or documentation about that issue?
Thanks and Best regards,
Jean-Yves

There are two reasons I can come up with now, that you receive an Attribute Error when you start the software:

“pyusb” a python library is not installed or incorrectly installed. This can be fixed by running: “pip install pyusb”

A problem with the libusb dll backend for pyusb on windows 10

One more way to possibly fix the problem:
Use the “requirements.txt” to double check you python package installation. Here is the Github Link.
You can use the file like this: “pip install -r requirements.txt”, that should install anything you are possible missing.

If this does not fix it, I can help you further if you give me the print out of the full error.

We did some further investigation. The problem is on our end, most likely when we recently updated drivers for the hardware. Thanks for bringing this up, we will fix it as quick as we can.
I created a github issue so you can track the progress.

Side Note: I updated the requirements.txt. This should get rid of the “no module named matplotlib” error at the beginning of the error message.

Another side note: If “pip install -r requirements.txt” gave you an error it is most likely due to:

Not having pip (the package manager for python) installed. If you search “how to install pip” it should give you a sensible tutorial, there is a lot out there.

You current working directory when running the command “pip install -r requirements.txt” was not .

pip is not in your system’s PATH. You can search variations of how to add the pip and python directories to your environment variable PATH.

Hopefully one of these fixes works for you and we will work on the “function ‘usb_find_busses’ not found” bug on our side.

Let me know if you have any other questions. If they are not related just start a new topic and I can help you there.

Things are getting better. I localized the problem being my usb 2.0 hub not fully compatible with my computer’s usb3.0 port Lenovo i7 720.
The cw_lite seems to be working properly with your usb driver V1.2.6.0 now, while using the simple serial example. I will pursue with the drivers you sent me this morning and I will let you know soon. I want to make sure that the cw V3.5.4 is working properly on a Windows 10 machine.

Hi Colin, SUCCESS!!!
My CW1173 scope finally works properly with version 3.5.4 on my Windows 10 machine.
I loaded your cwlite usbdriver - Copy.zip received last Friday but my computer failed to recognize it.
So doing some research on the Lenovo site revealed that they had some issues with the USB-3 / USB-C ports power management. I loaded their latest bios release to my laptop and redid the CW usbdriver installation. It installed correctly but failed to recognize the chipwhisperer-lite. I searched for the SAM3U driver in your file but could not find it, so I used the AT32UC3 driver instead and the USB communication with the CW was finally established without error messages as previously found with the capture application.

I presume that the issue is solved and I will be able to start working on my project related to Passenger Rail Transit communication systems.

I wish to thank you Colin, Franz and jmichel (Jean-Michel I presume) for your precious collaborative effort,s which reminds me that I’m not left alone in this fascinating world.